Emerson Dixell XW30LH Wiring diagram

Digital controller for medium-low temperature
refrigeration applications
XW30LH – XW30LRH
1. GENERAL WARNING
1.1 PLEASE READ BEFORE USING THIS MANUAL
•This manual is part of the product and should be kept near the instrument for easy and quick
reference.
•The instrument shall not be used for purposes different from those described hereunder. Itcannot be
used as a safety device.
•Check the application limits before proceeding.
•Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring
the same and unchanged functionality.
1.2 SAFETY PRECAUTIONS
•Check the supply voltage is correctbefore connecting the instrument.
•Do not expose to water or moisture: use the controller only within the operating limits avoiding sudden
temperature changes with high atmospheric humidity to prevent formation ofcondensation
•Warning: disconnect all electrical connections before any kind of maintenance.
•Fit the probe where it is notaccessible by the End User.The instrument must notbe opened.
•In case of failure or faulty operation send the instrument back to the distributor or to “Dixell S.r.l.” (see
address) with a detailed description of the fault.
•Consider the maximum currentwhich can be applied to each relay (see Technical Data).
•Ensure that the wires for probes, loads and the power supply are separated and far enoughfrom each
other, without crossing or intertwining.
•In case of applications in industrial environments, the use of mains filters (our mod. FT1) in parallel
with inductive loads could be useful.
2. GENERAL DESCRIPTION
Models XW30LH and XW30LRH, format 38x185mm, are microprocessor based controllers, suitable
for normal temperature applications on ventilated refrigerating units. They have 3 relay outputs to
control compressor, fan, and light.
They could be provided with a Real Time Clock which allows programming of up to 6 daily defrost
cycles, divided into holidays and workdays. A “Day and Night” function with two different set points is
fitted for energy saving. They are also provided with up to 3 NTC or PTC probe inputs, the first one for
temperature control, the second one, to be located onto the evaporator, to control the defrost
termination temperature and to managed the fan. One of the digital inputs can operate as third
temperature probe. The fourth probe is used to signal the condenser temperature alarm or to display a
temperature. NOTE: the fourth probe is available only for XW30LH models.
The HOT KEY output allows connecting the unit, by means of the external module XJ485-CX, to a
network line ModBUS-RTU compatible such as the dIXEL monitoring units of X-WEB family. It
allows programming the controller by means the HOT KEY programming keyboard.
The instrument is fully configurable through special parameters that can be easily programmed
through the keyboard.
3. CONTROLLING LOADS
3.1 COMPRESSOR
The regulation is performed according to the
temperature measured by the thermostat
probe with a positive differential from the set
point: if the temperature increases and
reaches set point plus differential the
compressor is started and then turned off
when the temperature reaches the set point
value again.
In case of fault in the thermostat probe the start and stop of the compressor are timed through
parameters Con and CoF.
3.2 DEFROST
Defrost is performed through a simple stop of the compressor.
The defrost interval depends on the presence of the RTC (optional). If the RTC is present is controlled
by means of parameter EdF:
-EdF=in:a defrost starts after elapsing the idF time (standard way for controller without RTC).
-EdF=rtC: defrosts are scheduled by using a real time clock system, depending on the hours
set in the parameters Ld1..Ld6, during workdays, and in Sd1…Sd6 during holidays.
Other parameters are used to control defrost cycles: its maximum length (MdF) and two defrost
modes: timed or controlled by the evaporator’s probe (P2P).
3.3 CONTROL OF EVAPORATOR FANS
The fan control mode is selected by means of the FnC parameter:
-FnC=C_n: fans will switch ON and OFF with the compressor and not run during defrost;
-FnC=o_n: fans will run even if the compressor is off, and not run during defrost;
-FnC=C_Y: fans will switch ON and OFF with the compressor and run during defrost;
-FnC=o_Y: fans will run continuously also during defrost.
After defrost, there is a timed fan delay allowing for drip time, set by means of the Fnd parameter.
An additional parameter FSt provides the setting of temperature, detected by the evaporator probe,
above which the fans are always OFF. This is used to make sure circulation of air only if his
temperature is lower than set in FSt.
3.3.1 Forced activation of evaporator fans
This function, managed by the FCt parameter, is designed to avoid short cycles of evaporator fans,
which could happen when the controller is switched on or after a defrost (when the room air warms the
evaporator). If the temperature difference between the evaporator and the room probes is higher than
the value set in the FCt parameter the fans are switched on. With FCt=0 this function is disabled.
3.3.2 Fans cyclic activation with compressor off.
When FnC=C-n or C-Y (fans working in parallel with the compressor), by means of the Fon and FoF
parameters the fans can carry out on and off cycles even if the compressor is switched off. When the
compressor is stopped the fans go on working for the Fon time. With Fon=0 the fans remain always
off, when the compressor is off.
4. FRONT PANEL COMMANDS
KEY COMBINATIONS:
+
To lock & unlock the keyboard.
+
To enter in programming mode.
+
To return to the room temperature display.
4.1 USE OF LEDS
Each LED function is described in the following table.
LED
MODE
FUNCTION
ON
Compressor enabled
Flashing
Anti-short cycle delay enabled
ON
Defrost enabled
Flashing
Drip time in progress
ON
Fans enabled
Flashing
Fans delay after defrost in progress.
ON
An alarm is occurring
ON
Continuous cycle is running
ON
Energy saving enabled
ON Light on
°C/°F
ON
Measurement unit
Flashing
Programming phase
5. AUTOMATIC KEYBOARD LOCK
To avoid accidental modifications of the controller settings, the XW30LH and XW30LRH keyboard
will be locked automatically if no key will be touched for 60 seconds. The controller will show
“LoC” flashing for few seconds when it’s locking. The light key is operating even if the keyboard is
locked.
5.1 TO UNLOCK THE KEYBOARD
1. Touch any key.
2. The keys will be lighted.
3. Keep a key pushed for few seconds till the “on” message is displayed.
6. MAX & MIN TEMPERATURE MEMORIZATION
6.1 HOW TO SEE THE MIN TEMPERATURE
1. Press and release the DOWN key.
2. The “Lo” message will be displayed followed by the minimum temperature recorded.
3. By pressing the DOWN key again or by waiting 5 sec the normal display will be restored.
6.2 HOW TO SEE THE MAX TEMPERATURE
1. Press and release the UP key.
2. The “Hi” message will be displayed followed by the maximum recorded temperature.
3. By pressing the UP key again or by waiting 5 sec the normal display will be restored.
6.3 HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED
1. Keep SET key pressed more than 3 sec, while the max or min temperature is displayed. (rSt
message will be displayed).
2. To confirm the operation the “rSt” message starts blinking and the normal temperature will be
displayed.
7. MAIN FUNCTIONS
7.1 TO SET THE CURRENT TIME AND DAY (ONLY WITH RTC)
When the instrument is switched on, it’s necessary to program the time and day.
1. Enter the Pr1 programming menu, by pushing the SET+ DOWN
keys for 3 sec.
2. The rtC parameter is displayed. Push the SET key to enter the real time clock menu.
3. The Hur (hour) parameter is displayed.
4. Push the SET and set current hour by the UP and DOWN keys, then push SET to
confirm the value.
5. Repeat the same operations with Min (minutes) and dAy (day) parameters.
To exit: Push both SET+UP keys or wait for 15 sec without pushing any keys.
To display target set point; in programming mode it selects a parameter or confirm an
operation.
(DEF) To start a manual defrost.
(UP) To see the max stored temperature; in programming mode it browses the
parameter codes or increases the displayed value.
(DOWN) To see the min stored temperature; in programming mode it browses the
parameter codes or decreases the displayed value.
(OFF) To switch the instrument off, if onF=oFF.
(LiG) To switch the light, if oA3=Lig.
1592027560 XW30LH-XW30LRH GB r1.0 18.03.2015 XW30LH – XW30LRH 1/5

7.2 HOW TO SEE THE SET POINT
1. Push and immediately release the SET key: the display will show the
Set point value.
2. Push and immediately release the SET key or wait for 5 sec to display
the probe value again.
7.3 HOW TO CHANGE THE SETPOINT
1. Push the SET key more than 2 sec to change the Set point value;
2. The value of the set point will be displayed and the “°C” or “°F”LED will start blinking.
3. To change the Set value, push both UP and DOWN arrows within 10 sec.
4. To store the new set point value, push the SET key again or wait for 10 sec.
7.4 HOW TO START A MANUAL DEFROST
Push the DEF key more than 2 sec and to start a manual defrost.
7.5 HOW TO CHANGE A PARAMETER VALUE
To change any parameter, operate as follows:
1. Enter the Programming mode by pressing both SET+DOWN keys for 3 sec (the “°C” or “°F”LED
will start blinking).
2. Select the required parameter and then press the SET key to display its value.
3. Use UP or DOWN keys to change its value.
4. Press SET to store the new value and move to the following parameter.
To exit: press both SET+UP keys or wait for 15 sec without pressing any key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-out to expire.
7.6 THE HIDDEN MENU
The hidden menu shows all the parameters of the instrument.
7.6.1 HOW TO ENTER THE HIDDEN MENU (Pr2)
1. Enter the Programming mode by pressing the SET+DOWN keys for 3 sec (the “°C” or “°F”
LED will start blinking).
2. Released the keys and then push again the SET+DOWN keys more than 7 sec. The “Pr2”
label will be displayed immediately followed by the HY parameter.
NOW THE HIDDEN MENU IS DISPLAYED.
3. Select the required parameter.
4. Press the SET key to display its value
5. Use UP or DOWN keys to change its value.
6. Press SET to store the new value and move to the following parameter.
To exit: press SET+UP keys or wait for 15 sec without pressing any key.
NOTE1: if no parameters are present in Pr1, after 3 sec the “noP” message will be displayed. Keep
the keys pushed till the Pr2 message is displayed.
NOTE2: the set value is stored even when the procedure is exited by waiting the time-out to expire.
7.6.2 MOVE A PARAMETER FROM Pr2 TO Pr1 AND VICEVERSA.
Each parameter present in the Pr2 (HIDDEN MENU) can be moved to the Pr1 (user level) by pressing
both SET+DOWN keys.
When in Pr2 (hidden menu) if a parameter is visible in Pr1, then the decimal point will be on.
7.7 MANUALLY LOCK AND UNLOCK THE KEYBOARD
+
HOW TO LOCK THE KEYBOARD
1. Keep both UP+DOWN keys pressed more than 3 sec.
2. The “PoF” message will be displayed and the keyboard is locked.
At this point it is only possible the viewing of the set point or the
MAX o Min temperature stored and to switch ON and OFF the light,
the auxiliary output and the instrument.
HOW TO UNLOCK THE KEYBOARD
Keep bothj UP+DOWN keys pressed more than 3 sec.
7.8 THE CONTINUOUS CYCLE
When defrost is not active, a continuous cycle can be activated by keeping the UP key pressed for
about 3 sec. The compressor operates to maintain the CCSset point for the time set through the CCt
parameter. The cycle can be terminated before the end of the set time by keeping the UP key pressed
3 sec.
7.9 THE ON/OFF FUNCTION
With onF=oFF, after pushing the ON/OFF key the instrument is switched off. The “OFF”
message will be displayed. In this configuration the regulation is disabled.
To switch the instrument on, push again the ON/OFF key.
WARNING: Loads connected to the normally closed contacts of the relays are always supplied
and under voltage, even if the instrument is in stand by mode.
8. PARAMETERS
rtC
Real time clock menu (only for controller with RTC): to set the time, date and defrost
start time.
REGULATION
HY
Differential: (0.1 to 25.5°C; 1 to 45°F) intervention differential for set point. Compressor
Cut IN is Set Point + differential (HY). Compressor Cut OUT is when the temperature
reaches the set point.
LS
Minimum set point:(-55°C to SET; -67°F to SET) sets the minimum value for the set
point.
US
Maximum set point: (SET to 150°C; SET to 302°F) set the maximum value for set
point.
Ot
Thermostat probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the thermostat probe.
P2P
Evaporator probe presence: (n; Y) n= not present, thedefrost stops by time;
Y= present, the defrost stops by temperature.
oE
Evaporator probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the evaporator probe.
P3P
Third probe presence (P3): (n; Y) n= not present, the terminals 18-20 operate as
digital input; Y= present, the terminals 18-20 operate as third probe.
o3
Third probe calibration (P3): (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the third probe.
P4P
Fourth probe presence: (n; Y) n = Not present; Y = present.
NOTE: only for XW30LH model.
o4
Fourth probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset
of the fourth probe.
NOTE: only for XW30LH model.
odS
Outputs activation delay at start up: (0 to 255min) this function is enabled at the initial
start up of the instrument and inhibits any output activation for the period of time set in
the parameter.
AC
Anti-short cycle delay: (0 to 50min) minimum interval between the compressor stop
and the following restart.
AC1
2nd compressor delay at start up (0÷255s) Used only with oA3 or oA4 = cP2 Time
interval between the switching on of the first compressor and the second one.
NOTE: only for XW30LH model.
rtr
Percentage of the second and first probe for regulation: (0 to 100; 100=P1, 0=P2) it
allows to set the regulation according to the percentage of the first and second probe, as
for the following formula (rtr(P1-P2)/100 + P2).
CCt
Compressor ON time during continuous cycle: (0.0 to 24h00min, res. 10min) allows
to set the length of the continuous cycle. Compressor stays on without interruption
during CCt time. This is useful, for instance, when the room is filled with new products.
CCS
Set point for continuous cycle: (-55 to 150°C; -67 to 302°F) it sets the set point used
during the continuous cycle.
Con
Compressor ON time with faulty probe: (0 to 255min) time during which the
compressor is active in case of faulty thermostat probe. With Con=0 compressor is
always OFF.
CoF
Compressor OFF time with faulty probe: (0 to 255min) time during which the
compressor is OFF in case of faulty thermostat probe. With CoF=0 compressor is
always active.
DISPLAY
CF
Temperature measurement unit: (°C; °F) °C = Celsius; °F = Fahrenheit.
WARNING: When the measurement unit is changed the SET point and the values of
the parameters HY, LS, US, ot, ALU and ALL have to be checked and modified (if
necessary).
rES
Resolution (for °C): (in=1°C; dE=0.1°C) allows decimal point display.
Lod
Instrument display: (P1; P2, P3, P4, SET, dtr) it selects which probe is displayed by
the instrument. P1 = Thermostat probe; P2 = Evaporator probe; P3 = Third probe (only
for model with this option enabled); P4 = Fourth probe, SET = set point; dtr =
percentage of visualization.
dLY
Display delay: (0 to 20min00s; res. 10s) when the temperature increases, the display
is updated of 1°C or 1°F after this time.
dtr
Percentage of the second and first probe for visualization when Lod=dtr: (0 to
99; 100=P1, 0=P2) if Lod=dtr it allows to set the visualization according to the
percentage of the first and second probe, as for the following formula (dtr(P1-P2)/100
+ P2).
DEFROST
EdF
Defrost mode (only for controller with RTC):
-rtC: Real Time Clock mode. Defrost time follows Ld1 to Ld6 parameters on
workdays and Sd1 to Sd6 on holidays.
-in: interval mode. The defrost starts when the time idf is expired.
dFP
Probe selection for defrost termination: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = Probe on
Hot Key plug.
dtE
Defrost termination temperature: (-55 to 50°C; -67 to 122°F) (enabled only when
EdF=Pb) sets the temperature measured by the evaporator probe, which causes the
end of defrost.
idF
Interval between defrost cycles: (0 to 120hours) determines the interval of time
between two defrost cycles.
MdF
(Maximum) length for defrost: (0 to 255min) when P2P=n, (not evaporator probe:
timed defrost) it sets the defrost duration. When P2P=Y (defrost end based on
temperature) it sets the maximum length for defrost.
dFd
Temperature displayed during defrost: (rt; it; SEt; dEF) rt = real temperature;
it = temperature at defrost start; SEt = set point; dEF = “dEF” label.
dAd
MAX display delay after defrost: (0 to 255min) sets the maximum time between the
end of defrost and the restarting of the real room temperature display.
FANS
FnC
Fans operating mode: (C-n; o-n; C-Y; o-Y) C-n = runs with the compressor, OFF during
defrost; o-n = continuous mode, OFF during defrost; C-Y = runs with the compressor,
ON during defrost; o-Y = continuous mode, ON during defrost.
Fnd
Fans delay after defrost: (0 to 255min) interval between end of defrost and evaporator
fans start.
FCt
Temperature differential to avoid fan short cycles: (0 to 59°C; 0 to 90°F) (N.B.:
FCt=0 means function disabled) if the difference of temperature between the evaporator
and the room probes is higher than FCt value, the fans will be switched on.
FSt
Fans stop temperature: (-55 to 50°C; -67 to 122°F) setting of temperature, detected by
evaporator probe, above which fans are always OFF.
Fon
Fan ON time: (0 to 15min) with Fnc=C_n or C_Y, (fan activated in parallel with
compressor) it sets the evaporator fan ON cycling time when the compressor is off. With
Fon=0 and FoF≠0 the fan are always off, with Fon=0 and FoF=0 the fan are always off.
FoF
Fan OFF time: (0 to 15min)
With FnC=C_n or C_Y, (fan activated in parallel with compressor) it sets the evaporator
fan off cycling time when the compressor is off.
With Fon=0 and FoF≠0 the fan are always off, with Fon=0 and FoF=0 the fan are
always off.
FAP
Probe selection for fan management: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = 4th Probe.
1592027560 XW30LH-XW30LRH GB r1.0 18.03.2015 XW30LH – XW30LRH 2/5

AUXILIARY THERMOSTAT CONFIGURATION
ACH
Kind of regulation for auxiliary relay: (Ht; CL) Ht = heating; CL = cooling.
SAA
Set Point for auxiliary relay: (-55.0 to 150.0°C; -67 to 302°F) it defines the room
temperature set point to switch auxiliary relay.
SHY
Differential for auxiliary output: (0.1 to 25.5°C; 1 to 45°F) intervention differential for
auxiliary output set point.
•ACH=CL, AUX Cut in is [SAA+SHY]; AUX Cut out is SAA.
•ACH=Ht, AUX Cut in is [SAA–SHY]; AUX Cut out is SAA.
ArP
Probe selection for auxiliary: (nP; P1; P2; P3; P4) nP = no probe, the auxiliary relay is
switched only by the digital input; P1 = Probe 1 (Thermostat probe); P2 = Probe 2
(evaporator probe); P3 = Probe 3 (display probe); P4 = Probe 4.
Sdd
Auxiliary relay off during defrost: (n; Y) n= the auxiliary relay operates during defrost.
Y= the auxiliary relay is switched off during defrost.
ALARMS
ALP
Probe selection for alarm: (nP; P1; P2; P3; P4) nP = no probe, the temperature alarms
are disabled; P1 = Probe 1 (Thermostat probe); P2 = Probe 2 (evaporator probe);
P3 = Probe 3 (display probe); P4 = Fourth probe.
ALC
Temperature alarms configuration: (Ab; rE) Ab = absolute temperature, alarm
temperature is given by the ALL or ALU values. rE = temperature alarms are referred to
the set point. Temperature alarm is enabled when the temperature exceeds the
[SET+ALU] or [SET-ALL] values.
ALU
MAXIMUM temperature alarm:
•If ALC=Ab: [ALL to 150.0°C or ALL to 302°F]
•If ALC=rE: [0.0 to 50.0°C or 0 to 90°F]
when this temperature is reached the alarm is enabled, after the ALd delay time.
ALL
Minimum temperature alarm:
•If ALC=Ab: [-55°C to ALU; -67 to ALU]
•If ALC=rE: [0.0 to 50.0°C or 0 to 90°F]
when this temperature is reached the alarm is enabled, after the ALd delay time.
AFH
Differential for temperature alarm recovery: (0.1 to 25.5°C; 1 to 45°F) intervention
differential for recovery of temperature alarm.
ALd
Temperature alarm delay: (0 to 255 min) time interval between the detection of an
alarm condition and alarm signalling.
dAo
Exclusion of temperature alarm at start-up: (0.0 to 24h00min, res. 10min) time
interval between the detection of the temperature alarm condition after instrument power
on and alarm signalling.
CONDENSER TEMPERATURE ALARM
AP2
Probe selection for temperature alarm of condenser: (nP; P1; P2; P3; P4)
nP = no probe; P1 = thermostat probe; P2 = evaporator probe; P3 = configurable probe;
P4 = Probe on Hot Key plug.
AL2
Low temperature alarm of condenser: (-55 to 150°C; -67 to 302°F) when this
temperature is reached the LA2 alarm is signalled, possibly after the Ad2 delay.
Au2
High temperature alarm of condenser: (-55 to 150°C; -67 to 302°F) when this
temperature is reached the HA2 alarm is signalled, possibly after the Ad2 delay.
AH2
Differential for temperature condenser alarm recovery: 0.1 to 25.5°C; 1 to 45°F.
Ad2
Condenser temperature alarm delay: (0 to 255 min) time interval between the
detection of the condenser alarm condition and alarm signalling.
dA2
Condenser temperature alarm exclusion at start up: 0.0 to 24h00min, res. 10min.
bLL
Compressor off with low temperature alarm of condenser: (n; Y) n= compressor
keeps on working; Y= compressor is switched off till the alarm is present, in any case
regulation restarts after AC time at minimum.
AC2
Compressor off with high temperature alarm of condenser: (n; Y) n= compressor
keeps on working; Y= compressor is switched off till the alarm is present, in any case
regulation restarts after AC time at minimum.
OUTPUT RELAY
tbA
Alarm relay silencing (with oAx =ALr): (n; Y) n= silencing disabled: alarm relay stays
on till alarm condition lasts. Y= silencing enabled: alarm relay is switched OFF by
pressing a key during an alarm.
oA1
Third relay configuration (XW30LH: terminals 1-3, XW30LRH: terminals 5-6): (dEF;
FAn; ALr; LiG; AUS; onF; db; dEF2; HES) dEF = defrost; FAn = do not select it; ALr =
alarm; LiG = light; AUS = Auxiliary relay; onF = always on with instrument on; db =
neutral zone; dEF2 = do not select it; HES = night blind.
AoP
Alarm relay polarity: (CL; oP) it set if the alarm relay is open or closed when an alarm
occurs. CL = terminals closed during an alarm; oP = terminals open during an alarm.
DIGITAL INPUTS
i1P
First digital input polarity: (oP; CL) oP = the digital input is activated by opening the
contact; CL = the digital input is activated by closing the contact.
i1F
First digital input configuration: (EAL; bAL; PAL; dor; dEF; ES; AUS; Htr; FAn; HdF;
onF; Sbt) EAL = external alarm: “EA” message is displayed; bAL = serious alarm “CA”
message is displayed; PAL = pressure switch alarm, “CA” message is displayed; dor =
door switch function; dEF = activation of a defrost cycle; ES = energy saving; AUS =
auxiliary relay activation with oA2=AUS; Htr = type of inverting action (cooling or
heating); FAn = fan; HdF = Holiday defrost (enable only with RTC); onF = to switch the
controller off; Sbt = to activate Sabbath mode.
did
Digital input 1 alarm delay: (0 to 255 min) delay between the detection of the external
alarm condition and its signalling.
When i1F= PAL, it is the interval of time to calculate the number of pressure switch
activation.
i2P
Second digital input polarity: (oP; CL) oP = the digital input is activated by opening the
contact; CL = the digital input is activated by closing the contact.
i2F
Second digital input configuration: (EAL; bAL; PAL; dor; dEF; ES; AUS; Htr; FAn;
HdF; onF; Sbt) EAL = external alarm: “EA” message is displayed; bAL = serious alarm
“CA” message is displayed; PAL = pressure switch alarm, “CA” message is displayed;
dor = door switch function; dEF = activation of a defrost cycle; ES = energy saving; AUS
= auxiliary relay activation with oA2=AUS; Htr = type of inverting action (cooling or
heating); FAn = fan; HdF = Holiday defrost (enable only with RTC); onF = to switch the
controller off; Sbt = to activate Sabbath mode.
doA
Door open alarm delay: 0 to 255 min.
d2d
Digital input 2 alarm delay: (0 to 255 min) delay between the detection of the external
alarm condition and its signalling.
When i2F= PAL, it is the interval of time to calculate the number of pressure switch
activation.
nPS
Number of pressure switch activation: (0 to 15) Number of activation, during the did
or d2d interval, before signalling an alarm event (i1F, i2F=PAL).
If the nPS activation during did or d2d time is reached, switch off and on the instrument
to restart normal regulation.
odC
Compressor status when open door: (no; FAn; CPr;F_C;) no = normal;
FAn = normal; CPr = compressor OFF, F_C = compressor OFF.
rrd
Outputs restart after door open alarm: (n; Y) n= outputs follow the odC parameter.
Y= outputs restart with a door open alarm.
HES
Delta temperature during an Energy Saving cycle: (-30.0 to 30.0°C; -54 to 54°F) it
sets the increasing value of the set point [SET+HES] during the Energy Saving cycle.
CURRENT TIME AND WEEKLY HOLIDAYS (ONLY FOR MODELS WITH RTC)
Hur
Current hour: 0 to 23h.
Min
Current minute: 0 to 59min.
dAY
Current day: Sun to SAt.
Hd1
First weekly holiday: (Sun to nu) set the first day of the week which follows the holiday
times.
Hd2
Second weekly holiday: (Sun to nu) set the second day of the week which follows the
holiday times.
N.B.: Hd1, Hd2 can be set also as “nu” value (Not Used).
ENERGY SAVING TIMES (ONLY FOR MODELS WITH RTC)
ILE
Energy Saving cycle start during workdays:(0 to 23h50min) during the Energy
Saving cycle the set point is increased by the value in HES so that the operation set
point is SET+HES.
dLE
Energy Saving cycle length during workdays: (0 to 24h00min) sets the duration of the
Energy Saving cycle on workdays.
ISE
Energy Saving cycle start on holidays: 0 to 23h50min.
dSE
Energy Saving cycle length on holidays: 0 to 24h00min.
TO SET DEFROST TIMES (ONLY FOR MODELS WITH RTC)
Ld1...Ld6
Workday defrost start: (0 to 23h50min) these parameters set the beginning of the 6
programmable defrost cycles during workdays. Ex: when Ld2=12.4 the second
defrost starts at 12.40 during workdays.
Sd1...Sd6
Holiday defrost start: (0 to 23h50min) these parameters set the beginning of the 6
programmable defrost cycles on holidays. Ex: when Sd2=3.4 the second defrost
starts at 3.40 on holidays.
N.B.: to disable a defrost cycle set it to “nu” (not used).
OTHER
LoC
Lock keyboard timer: nu(9) = keyboard never blocked, or 10 to 255 sec
Adr
Serial address: (1 to 247) identifies the instrument address when connected to a
ModBUS compatible monitoring system.
PbC
Type of probe: (PtC; ntC) it allows to set the kind of probe used by the instrument:
-PtC = PTC probe;
-ntC = NTC probe.
onF
On/Off key enabling: (nU; oFF; ES) nU = disabled; oFF = enabled; ES = not set it.
dP1
Thermostat probe display.
dP2
Evaporator probe display.
dP3
Third probe display.
dP4
Fourth probe display (only for XW30LH model).
rSE
Real set point: it shows the set point used during the energy saving cycle or during the
continuous cycle.
rEL
Software release for internal use.
Ptb
Parameter table code: readable only.
9. DIGITAL INPUTS
The first digital input (XW30LH: terminals 13-14; XW30LRH: terminals 14-15) is enabled if P3P=n.
With P3P=n and i1F=i2F the second digital input will be disabled.
The free voltage digital inputs are programmable by the i1F and i2F parameters.
9.1 GENERIC ALARM (i1F or i2F = EAL)
As soon as the digital input is activated the unit will wait for did time delay before signalling the “EAL”
alarm message. The outputs status doesn’t change. The alarm stops just after the digital input is de-
activated.
9.2 SERIOUS ALARM MODE (i1F or i2F = bAL)
When the digital input is activated, the unit will wait for did delay before signalling the “CA” alarm
message. The relay outputs are switched OFF. The alarm will stop as soon as the digital input is de-
activated.
9.3 PRESSURE SWITCH (i1F or i2F = PAL)
If during the interval time set by did parameter, the pressure switch has reached the number of
activation of the nPS parameter; the “CA” pressure alarm message will be displayed. The compressor
and the regulation are stopped. When the digital input is ON the compressor is always OFF. If the
nPS activation in the did time is reached, switch off and on the instrument to restart normal
regulation.
9.4 DOOR SWITCH INPUT (i1F or i2F = dor)
It signals the door status and the corresponding relay output status through the odCparameter: no:
normal (any change); FAn: Fan OFF; CPr:Compressor OFF; F_C:Compressor and fan OFF.
Since the door is opened, after the delay time set through parameter did, the door alarm is enabled,
the display shows the message “dA” and the regulation restarts if rtr=YES. The alarm stops as
soon as the external digital input is disabled again. With the door open, the high and low temperature
alarms are disabled.
1592027560 XW30LH-XW30LRH GB r1.0 18.03.2015 XW30LH – XW30LRH 3/5

9.5 START DEFROST (i1F or i2F = dEF)
It starts a defrost if there are the right conditions. After the defrost is finished, the normal regulation will
restart only if the digital input is disabled otherwise the instrument will wait until the MdF safety time is
expired.
9.6 SWITCH THE AUXILIARY RELAY (i1F or i2F = AUS)
With oAx=AUS the digital input will change the status of the auxiliary relay.
9.7 INVERSION OF THE KIND OF ACTION:HEATING-COOLING (i1F or i2F=Htr)
This function allows to invert the regulation of the controller: from cooling to heating and viceversa.
9.8 ENERGY SAVING (i1F or i2F = ES)
The Energy Saving function allows to change the set point value as the result of the SET+HES
(parameter) sum. This function is enabled until the digital input is activated.
9.9 ON OFF FUNCTION (i1F or i2F = onF)
To switch the controller on and off.
9.10 DIGITAL INPUTS POLARITY
The digital input polarity depends on the i1P and i2P parameters.
-i1P or i2P =CL:the input is activated by closing the contact.
-i1P or i2P=OP: the input is activated by opening the contact.
10. TTL SERIAL LINE– FOR MONITORING SYSTEMS
The TTL serial line, available through the HOT KEY connector, allows by means of the external
TTL/RS485 converter, XJ485-CX, to connect the instrument to a monitoring system ModBUS-RTU
compatible such as the X-WEB500/3000/300.
11. X-REP OUTPUT – OPTIONAL
As optional, an X-REP can be connected to the instrument, trough the dedicated connector.
To connect the X-REP to the
instrument the following
connectors must be used
CAB/REP1(1m), CAB/REP2
(2m), CAB/REP5(5m),
12. INSTALLATION AND MOUNTING
The XW30LH shall be mounted on vertical panel, in a 150x31 mm hole, and fixed using the special
brackets supplied with the controllers. The temperature range allowed for correct operation is 0 to
60°C. Avoid places subject to strong vibrations, corrosive gases, excessive dirt or humidity. The same
recommendations apply to probes. Let the air circulate by the cooling holes.
12.1 CUT OUT
13. ELECTRICAL CONNECTIONS
The instruments are provided with screw terminal block to connect cables with a cross section up to
2.5 mm2 for the digital and analogue inputs. Relays and power supply have a Faston connection
(6.3mm). Heat-resistant cables have to be used. Before connecting cables make sure the power
supply complies with the instrument’s requirements.
Separate the probe cables from the power supply cables, from the outputs andthe power connections.
Do not exceed the maximum current allowed on each relay, in case of heavier loads use a suitable
external relay.
N.B. Maximum current allowed for all the loads is 20A.
13.1 PROBE CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid
infiltration. It is recommended to place the thermostat probe away from air streams to correctly
measure the average room temperature. Place the defrost termination probe among the evaporator
fins in the coldest place, where most ice is formed, far from heaters or from the warmest place during
defrost, to prevent premature defrost termination.
14. HOW TO USE THE HOT KEY
14.1 PROGRAM A HOT KEY FROM AN INSTRUMENT (UPLOAD)
1. Program one controller with the front keypad.
2. When the controller is ON, insert the “HOT-KEY” and push UP button; the “uPL”message
appears followed a by a flashing “End”label.
3. Push SET button and the “End” will stop flashing.
4. Turn OFF the instrument, remove the “HOT-KEY” and then turn it ON again.
NOTE: the “Err” message appears in case of a failed programming operation. In this case push again
button if you want to restart the upload again or remove the “HOT-KEY” to abort the operation.
14.2 PROGRAM AN INSTRUMENT BY USING A HOT KEY (DOWNLOAD)
1. Turn OFF the instrument.
2. Insert a pre-programmed “HOT-KEY”into the 5-PIN receptacle and then turn the Controller
ON.
3. The parameter list of the “HOT-KEY” will be automatically downloaded into the Controller
memory. The “doL” message will blink followed a by a flashing “End” label.
4. After 10 seconds the instrument will restart working with the new parameters.
5. Remove the “HOT-KEY”.
NOTE: the message “Err” is displayed for failed programming. In this case turn the unit off and then
on if you want to restart the download again or remove the “HOT-KEY”to abort the operation.
15. ALARM SIGNALS
Message
Cause
Outputs
P1
Room probe failure
Compressor output acc. to par. Con and CoF
P2
Evaporator probe failure
Defrost end is timed
P3
Third probe failure
Outputs unchanged
P4
Fourth probe failure
Outputs unchanged
HA
Maximum temperature alarm
Outputs unchanged.
LA
Minimum temperature alarm
Outputs unchanged.
HA2
Condenser high temperature
It depends on the AC2parameter
LA2
Condenser low temperature
It depends on the bLL parameter
dA
Door open
Compressor and fans restarts
EA
External alarm
Output unchanged.
CA
Serious external alarm (i1F=bAL)
All outputs OFF.
CA
Pressure switch alarm (i1F=PAL)
All outputs OFF
rtC Real time clock alarm
Alarm output ON; Other outputs unchanged;
Defrosts according to par. idF Set real time clock
has to be set.
rtF Real time clock board failure
Alarm output ON; Other outputs unchanged;
Defrosts according to par. idF. Contact the service.
15.1 SILENCING BUZZER /ALARM RELAY OUTPUT
-tbA=Y: the buzzer and the relay are is silenced by pressing any key.
-tbA=n: only the buzzer is silenced while the alarm relay is on until the alarm condition
recovers.
15.2 ALARM RECOVERY
Probe alarms P1, P2, P3 and P4 start some seconds after the fault in the related probe; they
automatically stop some seconds after the probe restarts normal operation. Check connections before
replacing the probe.
Temperature alarms HA, LA, HA2 and LA2 automatically stop as soon as the temperature returns to
normal values.
Alarms EA and CA (with i1F=bAL)recover as soon as the digital input is disabled.
Alarm CA (with i1F=PAL) recovers only by switching off and on the instrument.
15.3 OTHER MESSAGES
on
Keyboard enabled after automatic lock.
LOC
Keyboard automatically locked
Pon
Keyboard unlocked.
PoF
Keyboard locked
noP
In programming mode: none parameter is present in Pr1
On the display or in dP2, dP3, dP4: the selected probe is nor enabled
16. TECHNICAL DATA
Housing: self extinguishing ABS
Case: facia 38x185 mm; depth [XW30LH: 76mm], [XW30LRH: 40mm]
Mounting:panel mounting in a 150x31 mm panel cut-out with the 2 metal brackets supplied
Protection: IP20
Frontal protection: IP65
Connections: screw terminal block ≤2.5 mm2heat-resistant wiring and 6.3mm Faston
Power supply: 230Vac or. 110Vac or 24Vac ±10%
Power absorption: 5VA max
Display:3 digits, white LED, 14.2 mm high
Inputs:Up to 4 NTC or PTC probes
Digital inputs:2 free voltage
Relay outputs for XW30LH models: Total current on loads MAX. 20A
Compressor: relay SPST 20(8) A, 250Vac
Light: relay SPST 8 or 16(3) A, 250Vac
Fans: relay SPST 8(3) A, 250Vac
Relay outputs for XW30LRH models: Total current on loads MAX. 16A
Compressor: relay SPST 20(8)A, 250Vac
Fans: relay SPST 5A, 250Vac
Light:relay SPST 8(3) A, 250Vac
Other output: buzzer
Serial output: TTL standard
Communication protocol: Modbus - RTU
Data storing:on the non-volatile memory (EEPROM)
Internal clock back-up: 24 hours (only for model with RTC)
Kind of action: 1B
Pollution degree: 2
Software class: A
Rated impulsive voltage: 2500V
Over voltage Category: II
Operating temperature: 0 to 60 °C (32 to 140°F)
Storage temperature: -30 to 85°C (-22 to 185°F).
Relative humidity: 20 to 85% (not condensing)
Measuring and regulation range:
NTC probe: -40 to 110°C (-40 to 230°F)
PTC probe: -50 to 150°C (-58 to 302°F)
Resolution: 0.1°C or 1°C or 1°F (selectable)
Accuracy (ambient temp. 25°C): ±0.7°C ±1 digit
1592027560 XW30LH-XW30LRH GB r1.0 18.03.2015 XW30LH – XW30LRH 4/5

17. CONNECTIONS
17.1 XW30LH
Supply: 120Vac or 24Vac: connect to terminals 11-12
The light relay can be also 16(5)A according to the model
17.2 XW30LRH
Model at 120Vac: connect to terminals 8-9
18. DEFAULT SETTING VALUES
Label
Name
Range
°C/°F
Level
Set
Set point
LS to US
-5.0
- - -
rtC*
Real time clock menu
-
-
Pr1
Hy
Differential
[0.1 to 25.5°C]
[1 to 45°F]
2.0 Pr1
LS
Minimum set point
[-55°C to SET]
[-67°F to SET]
-50.0 Pr2
US
Maximum set point
[SET to 150°C]
[SET to 302°F]
110 Pr2
ot
Thermostat probe calibration
[-12 to 12°C]
[-21 to 21°F]
0.0 Pr1
P2P
Evaporator probe presence
n=not present; Y=present
Y
Pr1
oE
Evaporator probe calibration
[-12 to 12°C]
[-21 to 21°F]
0.0 Pr2
P3P
Third probe presence
n=not present; Y=present
n
Pr2
o3
Third probe calibration
[-12 to 12°C]
[-21 to 21°F]
0 Pr2
P4P
Fourth probe presence (only for
XW30LH)
n=not present; Y=present n Pr2
o4
Fourth probe calibration (only for
XW30LH)
[-12 to 12°C]
[-21 to 21°F]
0 Pr2
odS
Outputs delay at start up
0 to 255 min
0
Pr2
AC
Anti-short cycle delay
0 to 50 min
1
Pr1
Ac1
Second compressor start delay
0 to 255 sec
5
Pr2
rtr
P1-P2 percentage for regulation
0 to 100 (100=P1 , 0=P2)
100
Pr2
CCt
Continuous cycle duration
0.0 to 24h00min
0.0
Pr2
CCS
Set point for continuous cycle
[-55.0 to 150.0°C]
[-67 to 302°F]
-5 Pr2
Con
Compressor ON time with faulty probe
0 to 255 min
15
Pr2
CoF
Compressor OFF time with faulty probe
0 to 255 min
30
Pr2
CF
Temperature measurement unit
°C to °F
°C
Pr2
rES
Resolution
in=integer; dE= dec.point
dE
Pr1
Lod
Probe displayed
P1; P2
P1
Pr2
dLy
Display temperature delay
0.0 to 20min00sec (10 sec)
0.0
Pr2
dtr
P1-P2 percentage for display
1 to 99
50
Pr2
EdF*
Kind of interval for defrost
rtC; in
in
Pr2
dFP
Probe selection for defrost termination
nP; P1; P2; P3; P4
P2
Pr2
dtE
Defrost termination temperature
-50 to 50°C
8
Pr1
idF
Interval between defrost cycles
1 to 120 hours
6
Pr1
MdF
(Maximum) length for defrost
0 to 255 min
30
Pr1
dFd
Displaying during defrost
rt; it; SEt; DEF
it
Pr2
dAd
MAX display delay after defrost
0 to 255 min
30
Pr2
Fnc
Fan operating mode
C-n; o-n; C-y; o-Y
o-y
Pr1
Fnd
Fan delay after defrost
0 to 255 min
0
Pr1
FCt
Differential of temperature for forced
activation of fans
0 yo 50°C 0 Pr2
FSt
Fan stop temperature
[-50 to 50°C]
[-55 to 122°F]
40 Pr1
Fon
Fan on time with compressor off
0 to 15 min
0
Pr2
FoF
Fan off time with compressor off
0 to 15 min
0
Pr2
FAP
Probe selection for fan management
nP; P1; P2; P3; P4
P2
Pr2
ACH
Kind of action for auxiliary relay
CL; Ht
cL
Pr2
SAA
Set Point
for auxiliary relay
[-55.0 to 150°C]
[-67 to 302°F]
0,0 Pr2
SHy
Differential for auxiliary relay
[0.1 to 25.5°C]
[1 to 45°F]
2,0 Pr2
ArP
Probe selection for auxiliary relay
nP; P1; P2; P3; P4
nP
Pr2
Sdd
Auxiliary relay operating during defrost
n(0); Y(1)
n
Pr2
ALP
Alarm probe selection
nP; P1; P2; P3; P4
P1
Pr2
ALC
Temperat. alarms configuration
rE= related to set;
Ab = absolute
Ab Pr2
ALU
MAXIMUM temperature alarm
[SET to 150.0°C]
[SET to 302°F]
110,0 Pr1
ALL
Minimum temperature alarm
[-55.0°C to SET]
[-67°F to SET]
-50,0 Pr1
Label
Name
Range
°C/°F
Level
AFH
Differential for temperat. alarm recovery
[0.1 to 25.5°C]
[1 to 45°F]
2,0 Pr2
ALd
Temperature alarm delay
0 to 255 min
15
Pr2
dAo
Delay of temperature alarm at start up
0.0 to 23h50min
1,3
Pr2
AP2
Probe for temperat. alarm of condenser
nP; P1; P2; P3; P4
nP
Pr2
AL2
Condenser for low temperat. alarm
[-55 to 150°C]
[-67 to 302°F]
-40 Pr2
AU2
Condenser for high temperat. alarm
[-55 to 150°C]
[-67 to 302°F]
110 Pr2
AH2
Differ. for condenser temp. alar. recovery
[0.1°C to 25.5°C]
[1°F to 45°F]
5 Pr2
Ad2
Condenser temperature alarm delay
0 to 254 min; 255=nU
15
Pr2
dA2
Delay of cond. temper. alarm at start up
0.0 to 23h50min
1,3
Pr2
bLL
Compr. off for condenser low temperature
alarm
n(0); Y(1) n Pr2
AC2
Compr. off for condenser high
temperature alarm
n(0); Y(1) n Pr2
tbA
Alarm relay disabling
n(0); Y(1)
y
Pr2
oA1
Light
relay configuration
ALr = alarm; dEF = do not select
it; Lig =Light; AUS =AUX;
onF=always on; Fan= do not
select it; db = neutral zone; cP2
= second compressor; dF2 = do
not select it; HES = night blind
Lig Pr2
AoP
Alarmrelay polarity (oA1=ALr)
oP; cL
cL
Pr2
i1P
Digital input polarity
oP=opening; CL=closing
cL
Pr1
i1F
Digital i
nput 1 configuration
EAL, bAL, PAL, dor; dEF; Htr,
AUS
dor Pr1
did
Digital input alarm delay
0 to 255 min
15
Pr1
i2P
Digital input polarity
oP=opening; CL=closing
cL
Pr2
i2F
Dig
ital input configuration
EAL, bAL, PAL, dor; dEF; Htr,
AUS
EAL Pr2
d2d
Digital input alarm delay
0 to 255 min
5
Pr2
nPS
Number of activation of pressure switch
0 to 15
15
Pr2
odc
Compress and fan status when open door
no; Fan; CPr; F_C
F-c
Pr2
rrd
Regulation restart with door open alarm
n(0); Y(1)
y
Pr2
HES
Differential for Energy Saving
[-30 to 30°C]
[-54 to 54°F]
0 Pr2
Hur*
Current hour
0 to 23
-
rtc
Min*
Current minute
0 to 59
-
rtc
dAY*
Current day
Sun to SAt
-
rtc
Hd1*
First weekly holiday
Sun to SAt; nu
nu
rtc
Hd2*
Second weekly holiday
Sun to SAt; nu
nu
rtc
ILE*
Energy Saving cycle start during
workdays
0.0 to 23h50min 0 rtc
dLE*
Energy Saving cycle length during
workdays
0.0 to 24h00min 0 rtc
ISE*
Energy Saving cycle start on holidays
0.0 to 23h50min
0
rtc
dSE*
Energy Saving cycle length on holidays
0.0 to 24h00min
0
rtc
Ld1*
1st workdays defrost start
0.0 to 23h50min; nu
6.0
rtc
Ld2*
2nd workdays defrost start
0.0 to 23h50min; nu
13.0
rtc
Ld3*
3rd workdays defrost start
0.0 to 23h50min; nu
21.0
rtc
Ld4*
4th workdays defrost start
0.0 to 23h50min; nu
0.0
rtc
Ld5*
5th workdays defrost start
0.0 to 23h50min; nu
0.0
rtc
Ld6*
6th workdays defrost start
0.0 to 23h50min; nu
0.0
rtc
Sd1*
1st holiday defrost start
0.0 to 23h50min; nu
6.0
rtc
Sd2*
2nd holiday defrost start
0.0 to 23h50min; nu
13.0
rtc
Sd3*
3rd holiday defrost start
0.0 to 23h50min; nu
21.0
rtc
Sd4*
4th holiday defrost start
0.0 to 23h50min; nu
0.0
rtc
Sd5*
5th holiday defrost start
0.0 to 23h50min; nu
0.0
rtc
Sd6*
6th holiday defrost start
0.0 to 23h50min; nu
0.0
rtc
LoC
Keyboard lock timer
nu; 10 to 255 sec
60
Pr2
Adr
Serial address
1 to 247
1
Pr2
PbC
Kind of probe
PtC; ntC
ntc
Pr2
onF
on/off key enabling
nu, oFF; ES
oFF
Pr2
dP1
Room probe display
Read Only
-
Pr2
dP2
Evaporator probe display
Read Only
-
Pr2
dP3
Third probe display
Read Only
-
Pr2
dP4
Fourth probe display
Read Only
-
Pr2
rSE
Real set
actual set
-
Pr2
rEL
Software release
Read Only
1.8
Pr2
Ptb
Map code
Read Only
Pr2
* Only for model with real time clock
1592027560 XW30LH-XW30LRH GB r1.0 18.03.2015 XW30LH – XW30LRH 5/5